| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.21 |
| Score | 0% | 64% |
Water coming to a boil on a stove, ice melting, and steam from a cup of coffee are all examples of which of the following?
reflection |
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conduction |
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convection |
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radiation |
Convection is the transfer of heat by the circulation or movement of the heated parts of a liquid or gas.
A subatomic particle found in the nucleus of an atom. It carries no electric charge. This desribes which of the following?
neutron |
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electron |
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proton |
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atom |
A neutron is a subatomic particle found in the nucleus of an atom. It is neutral as it carries no electric charge.
Which of these represents the path of blood flow through the heart?
left atrium → left ventricle → lungs → right atrium → right ventricle |
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left atrium → right ventricle → lungs → left atrium → right ventricle |
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right atrium → right ventricle → lungs → left atrium → left ventricle |
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right atrium → left ventricle → lungs → left atrium → right ventricle |
To provide oxygen to the body, blood flows through the heart in a path formed by the right atrium → right ventricle → lungs → left atrium → left ventricle → body. When blood enters the right side of the heart it is deoxygenated. It enters the left side of the heart oxygenated after traveling to the lungs.
Which of the following is not part of the carbon cycle?
respiration |
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photosynthesis |
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precipitation |
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decomposition |
The carbon cycle represents the ciruit of carbon through Earth's ecosystem. Carbon dioxide (CO2) in the atmosphere is absorbed by plants through photosynthesis. Plants then die and release carbon back into the atmosphere during decomposition or are eaten by animals who breathe (respiration) the carbon into the atmosphere they exhale and produce waste which also releases carbon as it decays.
Within DNA, a variety of a particular gene is called a(n):
heterozygous |
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homozygous |
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chromosome |
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allele |
The gene is the base unit of inheritance and is contained within DNA. A gene may come in several varieties (alleles) and there are a pair of alleles for every gene. If the alleles are alike, a person is homozygous for that gene. If the alleles are different, heterozygous.